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Comprehensive treatment method of dry spinning spandex waste

A comprehensive treatment, spandex waste silk technology, applied in the direction of plastic recycling, mechanical material recycling, recycling technology, etc., can solve the problems of unstable quality of polytetrahydrofuran ether, unable to succeed in large-scale production, etc., to achieve great social and economic benefits , small investment, and the effect of reducing pollution

Inactive Publication Date: 2015-12-02
顾社辉
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  • Description
  • Claims
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Problems solved by technology

Due to the limitations of its technology and formula, the quality of the prepared polytetrahydrofuran ether is unstable, and it has not been successfully put into large-scale production

Method used

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  • Comprehensive treatment method of dry spinning spandex waste
  • Comprehensive treatment method of dry spinning spandex waste
  • Comprehensive treatment method of dry spinning spandex waste

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Embodiment Construction

[0035] A comprehensive treatment method for dry spinning spandex waste, said dry spinning spandex waste refers to dry spinning spandex waste silk, dry spinning spandex waste slurry and dry spinning spandex waste rubber block, the dry spinning spandex The comprehensive treatment method of waste includes the following steps:

[0036] (1) Broken:

[0037] ① Crushing of spandex waste silk by dry spinning method: Put the waste silk into the crusher to obtain shredded waste silk with a length of 2-3cm for later use.

[0038] ②Crushing of spandex waste rubber blocks by dry spinning method: first replace the DMAC (N,N-dimethylacetamide) in the waste rubber blocks (the waste rubber blocks can be soaked in a clear water pool or low-concentration DMAC), so that After the mass concentration of DMAC in the waste rubber block is lower than 5%, put it into the rotary dryer and dry it at 100-105°C until the moisture content is lower than 3%, then put the waste rubber block into the crusher f...

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Abstract

The invention relates to a comprehensive treatment method of dry-spun spandex waste materials. The comprehensive treatment method comprises the following steps: (1) crushing; (2) kneading: kneading broken waste silk, waste rubber block particles, waste slurry, triple superphosphate, pigment and dimethylacetamide (DMAC) for 15 to 25 minutes to obtain plastic crude rubber which is uniformly kneaded; (3) extruding: performing extrusion molding on the plastic crude rubber; (4) solidifying: putting the crude rubber into an extraction tank, and extracting the DMAC from the crude rubber to solidify a rubber material; (5) crushing: crushing the solidified rubber material to obtain particles; and (6) drying: adding the particles obtained in the step (5) into a drier, and drying the particles at the temperature of 100 DEG C to 105 DEG C until the water content is smaller than 3 percent so as to obtain polyurethane particles. According to the comprehensive treatment method, three dry-spun spandex waste materials comprising spandex waste material silk, spandex waste slurry and spandex waste rubber blocks can be comprehensively treated and are recycled to be profitable, so that the environmental pollution is reduced, raw materials are low in cost, and great social and economic benefits are gained.

Description

technical field [0001] The invention relates to a comprehensive treatment method for dry spinning spandex waste (including spandex waste silk, spandex waste pulp and spandex waste rubber block). Background technique [0002] In recent years, my country has become the world's largest producer of dry-spun spandex, and the subsequent treatment of dry-spun spandex waste has become a major issue. Thousands of tons of waste are produced each year. The original method is that the environmental protection department will force them to be transported to a designated place for deep burial, and the spandex manufacturers will have to pay several thousand yuan per ton for disposal. [0003] Dry spinning spandex waste includes the following types: ①Dry spinning spandex waste silk. ②Dry spinning spandex waste pulp. ③Dry spinning spandex waste rubber block (head material). A few days ago, there is no introduction of the above three kinds of waste comprehensive treatment processes and pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29B17/00B29B17/04C08L75/04C08K3/26
CPCY02W30/52Y02W30/62
Inventor 顾社辉
Owner 顾社辉
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